Improvement in feed-water heaters and purifiers



E. E. HERMANS & W. D. SMITH. Feedwater Heater and Purifier.

No. 196,013. Patented Oct. 9, 1877.

v J W a a l m JY' WITNESSES mman, 0. Maw/L *7 and/ Adan ATTORNEY N.PETERS. PHOTO-UTHQGRAPHER, WASHINGTON. D (L STATES PATENT OFFICE.

EDWARD E. HERMANS, OF REEDS LANDING, MINNESOTA, AND WVILLIAM I D. SMITH,OF KEITHSBURG, ILLINOIS.

IMPROVEMENT lN EEED-WATER HEATERS AND PURIFIERS.

Specification forming part of Letters Patent No. 196,013, dated October9, 1877; application filed August 25, 1877.

To all whom it may concern:

Be it known that we, EDWARD E. HER- MANs, of Reeds Landing, Minnesota,and WILLIAM D. SMITH, of Keithsburg, in the county of Mercer and Stateof Illinois, have invented a new and valuable Improvement in Feed-WaterHeaters and Purifiers; and we do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, and to the letters and figures of reference markedthereon.

Figure l of the drawings is a representation of an end view of theboiler, showing the heater and purifier applied, and Fig. 2 is a sideelevation of the same, with the heater in section.

This invention has relation to improvements in feed-water heaters andpurifiers for steam-boilers; and the nature of the invention consists inthe construction and novel arrangement of the various devices used, aswill be hereinafter more fully set forth.

In the annexed drawings, the letter A indicates an ordinarysteam-boiler, having the furnace B, ash-pit O, the fire-bed flue D,extendin g from the furnace to the back of the boiler, where it connectswith a vertical flue or lines, E, opening into the return-fines F.

The boiler has the usual steam-dome G, or its equivalent, and isprovided with a muddrum, A, communicating with the water-space of theboiler by a pipe, a, in which the impurities in the boiler willnaturally settle.

I represents the water-heating chamber, of which the rear wall of thereturn-flue E is wholly, or in part, the divisional wall between thefurnace and the said chamber. This lat ter is formed of boilerplate ofsuitable strength,

f represents a metallic pipe opening at one end into the mud-drum of theboiler, extending thence through the heater-Walh and carried up Withinthe same to a point near the top of the heater I. The Water, as itenters the said heater through pipe d and the discharge-tube 00, comesin contact with the rear wall of the furnace or return-flue E, and isgreatly heated before it reaches the open upper end of the pipe f. Thisheating causes the mud to be deposited or precipitated to the bottom ofthe heater, While the lighter impurities rise to the surface.

During the pumping, and the intervals between successive operations, anequilibrium is established between the steam-pressure in the heater andboiler, and the safety-valve upon the one is made to relieve both fromundue strain.

At the bottom of the heating-chamber is arranged a pipe, 71, closed atboth ends and provided with a number of spaced perforations. This pipeis connected to a pipe, 7., extending through the heater-wall, andprovided with a steam-cock, I. Vv'hen this latter is open, theaccinnulation of mud and other foreign impurities will be forced throughpipes h and k out of the heating-chamber. At the upper end of the latteris arranged a similar pipe, g, that is also perforated and prow'ded witha blow-off pipe, a, closed or opened by a suitable cock, j. This cockbeing open, scum and other floating impurities will be blown out of theheating-chamber I before the feed-water reaches the upper end of thedirect feed-pipe f, leading into the water-space or mud-drum of theboiler. The water is thus freed of all foreign matter, and admitted tothe boiler in a pure state.

By this means caking of the boiler is, to a great extent, prevented, andthe necessity of frequent stoppages, for the purpose of cleaning theboiler, obviated.

What we claim as new, and desire to secure by Letters Patent, is-

1. The combination, with afeed-Water heaterchamber, having a suitableinduct, d m, and a boiler, of a pipe leading from the steam-space of theboiler to the heater, and a pipe extendcocks l k and j 12, extendingthrough the heating-chamber Wall, substantially as specified.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two Witnesses.

EDWARD E. HERMANS. WILLIAM D. SMITH.

Witnesses:

OLVER DUSSCHIE, LUKE U. MALIN.

